... Is there a specific type of sandpaper or would sandpaper even work?
Thanks again for any assistance,
Sure, sand paper works great for removing the bigger pits and scratches - you want to use a 'wet-dry' automotive type with a good backing material
I usually start with something @220~320 to get them smoothed out and remove the 'age' from them if they are pretty rough.
Then go to @400 - then @600 - then judge the surface and go to @1000~1200 until you have it all smoothed out.
Then start your mechanical polishing - I sometimes start with a 'Brown" tripoli if there is quite a bit of dullness and age still or go right to a 'Red" (Rouge) polish if the last sanding left a pretty good surface to shine up.
I use cotton wheels on my drills and air-tools for this step. Again, depending on the amount of work needed to bring up the shine and size of the pieces.
Next step is to use a Mother's "Power Ball" (or you can use the soft-cotton 'puffs' and 'cones' found at many car swap meets) and either Mother's 'Billet", Eagle !'s 'Nano' or any of the other popular paste aluminum/metal polishes you can get at auto paint and supply stores.
Use this polish on the Power-Ball to go over the whole wheel and you will be amazed at how good it will start to look (truthfully, better than most of them look 'new'
I really don't use the Power-Ball for much other than this type of work and have really been impressed with how well they work and last
Last step is really easy - go to the store (or you wifes baking supplies) and get "Corn Starch" - yes the regular old stuff sold in stores.
Pour a small amount on a VERY CLEAN - NEW soft rag (the 'Micro-fiber" ones work great) and wipe the whole wheel with it - re-loading the rag with new powder as you work.
This last step picks up all the micrscopic 'black' aluminum dust out of the pores of the metal and really make s the wheels "Bling"
You will need to work with Gloves, Safety Glasses and a Mask to protect yourself - things will get messy FAST !!!
Oh, wear 'old' clothes you don't mind throwing away when do with the work - your wife (or ??? ) will NOT appreciate you throwin' your things into the wash and turning Everything 'black'
Hope this helps and other chime in with their processes.